You should be able to call at your 180 day mark at 7 am. If you have a reservation on property, you should be able to reserve for any day of your trip(180+10) I don't think you would have trouble getting something that week if you are calling at that point. If you want to get a dining reservation for afterwards, like CRT, you want to go online (you can start at 6 am)or call that morning to try and get that as well. Since some people will have already reserved for part of your week with their 180+10, it may be easier to get a day later in your week.